Electrostatic chuck with improved spacing mask and workpiece detection device



FIG. 1 depicts a top view of the electrostatic chuck with improvedspacing mask and workpiece detection device;

FIG. 2 depicts an elevation view of the electrostatic chuck when lookingup along the y-axis of FIG. 1;

FIG. 3 depicts a detailed view of part of a surface and circumferentialedge of the electrostatic chuck seen of FIG. 2;

FIG. 4 depicts an elevation view of the electrostatic chuck when lookingdown along the y-axis of FIG. 1;

FIG. 5 depicts an elevation view of the electrostatic chuck when lookingto the left along the x-axis of FIG. 1, the view when looking to theright being a mirror image to that of FIG. 5; and,

FIG. 6 is a bottom view of the electrostatic chuck.

The ornamental design for an electrostatic chuck with improved spacingmask and workpiece detection device, as shown.